Swinging door lock construction

ABSTRACT

A unitary, sheetlike, L-shaped lock frame has an edge part forming a strike plate and extending flatwise along and secured to a doorjamb edge surface with a frame side part extending flatwise longitudinally along a doorjamb side surface. A bolt opening is formed longitudinally through the juncture between the frame edge and side parts and the frame side part has longitudinally spaced overlying portions separated by intermediate underlying portions longitudinally slideably mounting a sheetlike lock bolt movable through the frame bolt opening. With a swinging door in closed position, the lock bolt may be extended overlapping the door side surface acting as an auxiliary lock and the strike plate of the lock frame edge part may be engaged by a main lock bolt extending from the door edge.

United States Patent 1,409,152 3/1922 Collins 292/292 1,412,340 4/1922 Cruikshank 292/292 1,549,182 3/1925 Church 292/292 2,533,396 12/1 950 Payne 292/340 Primary ExeminerGeorge F. Mautz Assistant Examiner-Edward J. McCarthy AISTRACT: A unitary, sheetlike, L-shaped lock frame has an edge part forming a strike plate and extending flatwise along and secured to a cloorjamb edge surface with a frame side part extending flatwise longitudinally along a doorjamb side surface. A bolt opening is formed longitudinally through the juncture between the frame edge and side parts and the frame side part has longitudinally spaced overlying portions separated by intermediate underlying portions longitudinally slideably mounting a sheetlike lock bolt movable through the frame bolt opening. With a swinging door in closed position, the lock bolt may be extended overlapping the door side surface acting as an auxiliary lock and the strike plate of the lock frame edge part may be engaged by a main lock bolt extending from the door edge.

INVENTOR.

GEORGE 0. READ "MAHONEY, HORNBAKER 8 SCHICK ATTORNEYS 4 SHEET 1 BF 2 PATENTED .mu I ma FIG. I.

PATENIED JAN! 1 I972 3533955 sum 2 OF 2 INVENTOR. GEORGE D. READ BYMAHONEY, HORNBAKER a SCH/CK ATTORNEYS SWINGING DOOR LOCK CONSTRUCTION BACKGROUND OF THE INVENTION This invention relates to a swinging door lock construction and more particularly to a swinging door lock construction of the fully manually operable, deadbolt type, normally installed operable between inner side surfaces of a door and doorjamb and solely operable from said door inner side despite the installation of other latches or locks in such door. Furthermore, the swinging door lock construction of the present invention is most advantageously usable as an auxiliary lock in combination with a conventional key-operated lock actionable between edges of the same door and doorjamb and at the same general location thereon. A novel mounting arrangement for the swinging door lock construction of the present invention gives far greater security than has heretofore been possible in similar types of locks and in the auxiliary lock environment further serves to make possible the combining into the lock construction of the present invention the strike plate for the main, key-operated door lock so as to decrease original installation time and costs and increase the security of the overall combined lock system.

Many prior deadbolt type of auxiliary locks have been heretofore provided and probably the major failing thereof has been the required manner of installation. As hereinbefore pointed out, the deadbolt type of locks must be mounted at the inner side surfaces of the door or doorjamb, or both, and this mounting has always been accomplished merely by the installation of the usual fasteners, such as wood screws and the like, directly into the door and doorjamb inner side surfaces. This, thereby, positions the fastening screws extending substantially parallel to the direction of swinging door movement during the initial stages of opening thereof.

Thus, even if the deadbolt type of lock is installed in combination with a usual main, key-operated lock, once the keyoperated lock has been manipulated and opened, it is usually possible with sufficient force to open thedoor by strong inward forces thereagainst. That is, with the obstruction of the key-operated lock removed, and in view of the direction of extension of the deadbolt type of lock wood screws or other fasteners, sharp impact forces against the door in its inward swinging direction will frequently tear the fasteners of the deadbolt lock from their mounting in the door and doorjamb inner surfaces. As a result, the security of the lock system installed on conventional doors and doorjambs is of questionable validity.

A further factor of consideration involved where a deadbolt type of lock is used as an auxiliary lock in combination with a conventional, key-operated main lock or main door latch is the dual installation requirements. With prior constructions, even though it is originally known that both the main door lock or main door latch and the auxiliary deadbolt type of lock are desired, each part of the combined lock system is separately installed, one having no true relationship to the other. Obviously, where it is originally known that the combined lock system is required, it is clearly advantageous if certain elements thereof can be combined so as to reduce the installation requirements and the necessary time for accomplishing the same.

OBJECTS AND SUMMARY OF THE INVENTION It is, therefore, an object of this invention to provide a swinging lock construction of the deadbolt type as hereinbefore generally discussed wherein, due to the specific combined configuration thereof, more secure fastening of the lock elements relative to the door and doorjamb is accomplished greatly increasing the locked security of the same. According to certain of the principles of the present invention, the frame of the lock is formed generally L shaped in horizontal cross section with an edge part thereof secured to the doorjamb edge surface and a side part thereof extending along the jamb inner side surface. The lock bolt is slidably mounted on the frame side part slidably movable generally parallel to the jamb inner side surface and extendable across the door inner side surface to overlap the door and obstruct the usual inward swinging movement of the door.

By providing the securement of the lock frame, through the frame edge part against the doorjamb edge surface, the fasteners accomplishing such fastening extend perpendicularly to the door initial swinging movement, rather than generally parallel thereto as is true with the prior constructions. Furthermore, with the door in closed position in the doorjamb, the door edge serves to protect the fasteners for the lock frame edge part against movement outward of the jamb edge which would be required for fastener removal. The overall result is that with the lock bolt in extended position overlapping the door inner side surface while the door is in closed position, virtually complete destruction of the doorjamb or destruction of the lock construction is required before inward swinging movement of the door can be accomplished toward open position and, again, it is not merely necessary to apply a sufficient inward swinging force on the door to cause parallel fastener removal as is true with the prior constructions and hereinbefore discussed.

It is a further object of this invention to provide a swinging door lock construction of the deadbolt type having the foregoing advantageous mounting securement which, when combined with an overall lock installation including a conventional key-operated main lock or main door latch, may have the described lock frame serve the dual function of not only mounting the now auxiliary deadbolt type of lock in the improved manner described, but also with said lock frame edge part forming the strike plate for the additional key-operated main lock or main door latch. The lock of the dead bolt type may have the frame edge part thereof formed as a conventional strike plate mounted on the doorjamb edge surface in somewhat conventional manner with the exception that portions of the frame edge part forming the strike plate extend inwardly along the dooljamb edge surface and around the doorjamb corner along the jamb inner side surface. Thus, a combined strike plate and auxiliary deadbolt type of lock installation is accomplished in one operation while still maintaining v the secure mounting of the dead bolt type of lock and while properly positioning and securing the strike plate in proper functional position for use by the key-operated main lock or main door latch.

It is also an object of this invention to provide a swinging door lock construction of the deadbolt type satisfying the foregoing objects in an efficient manner yet which may be relatively simply manufactured at a minimum of expense despite the clear advantages thereof. The lock frame may be formed unitary and of unique configuration for receiving the lock bolt slidable thereon, the lock bolt likewise being formed unitary and both the frame and bolt preferably being formed of sheet material. ln this manner, only a two-piece assembly is required through relatively simple manufacturing operations so as to reduce the material and labor costs to a minimum while still providing improved strength and durability in use.

Other objects and advantages of the invention will be apparent from the following specification and the accompanying drawings, which are for the purpose of illustration only.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing the deadbolt type lock construction of the present invention mounted as an auxiliary lock in combination with a conventional key-operated main lock for retaining a swinging door in closed position in a doorjamb, the deadbolt type of lock being shown with the bolt thereof in extended locking position;

FIG. 2 is an enlarged, horizontal sectional view looking in the direction of the arrows 2-2 in FIG. I, but with the bolt of the deadbolt type of lock in retracted position;

FIG. 3 is a perspective view showing the deadbolt type of lock of the present invention and the mounting thereof on the dooi iamb, the lock bolt again in retracted position;

FIG. 4 is an enlarged, side elevational view of the lock frame removed from the deadbolt type of lock of FIG. 3, the lock bolt being removed; and

FIG. 5 is an enlarged, side elevational view of the lock bolt taken from the deadbolt type of lock of FIG. 3 removed from the lock frame.

DESCRIPTION OF THE BEST EMBODIMENT CONTEMPLATED Referring to the drawings, an embodiment of the deadbolt type of lock of the present invention is shown as an auxiliary lock mounted in combination with a conventional, keyoperated main lock, both locks being mounted in usual environment for selectively retaining a swinging door in closed position aligned with a doorjamb. As shown, a doorjamb is generally indicated at and has the usual vertically extending edge surface 12 and inner side surface 14 extending somewhat right angularly to the edge surface. A usual hingedly mounted, inwardly swinging door is generally indicated at 16 and includes a corresponding vertically extending edge surface 18 and inner side surface 20, the door edge surface facing the doorjamb edge surface and the door side surface generally longitudinally aligned with the doorjamb side surface when the door is in its closed position.

The embodiment of the deadbolt type lock of the present invention is generally indicated at 22 secured to the doorjamb 10 as will be hereinafter described in detail and as here mounted, the deadbolt type lock is arranged as an auxiliary lock in combination with a conventional key-operated, main door lock generally indicated at 24. The main door lock 24, which could equally as well be merely a main door latch, is mounted in usual manner in the door 16 operable by usual door knobs 26 for projecting and retracting a main lock bolt 28 generally longitudinally outwardly of and reversely within the door edge surface 18. Although the deadbolt type of lock 22 of the present invention is shown herein in combination with the main door lock 24 as described, it should be understood at the onset that certain of the advantages of the present invention can still be obtained with use of the unique deadbolt type of look even though the main door lock 24 or a corresponding door latch is completely eliminated and it is not intended to limit the broader principles of the present invention to the exact combination shown.

The deadbolt type lock 22 is preferably formed of two basic components, a lock frame generally indicated at 30 and a lock bolt generally indicated at 32, both of which are preferably unitary components and formed sheetlike of usual materials. The lock frame 30 includes an edge part 34 extending preferably recessed within and along the doorjamb edge surface 12, and a side part 36 integral with the edge part extending generally longitudinally adjacent the doorjamb side surface 14 inwardly thereof. Where the deadbolt type of lock 22 is mounted in the combination shown with the main door lock 24, the lock frame edge part 34 is formed partially as a conventional strike plate 38 with a conventional strike plate opening 40 backed by a usual bolt-receiving recess 42 within the doorjamb edge surface 12.

Equally important and directed to one of the basic functions of the lock frame edge part 34 is the fact that the lock frame edge part is secured to the doorjamb edge surface 12 by usual fasteners 44, such as wood screws and the likev As a result, the fasteners 44 in their securement functions relative to the lock frame edge part 34 project into the doorjamb edge surface 12 at right angles to the initial inward swinging movement of the door 16 when said door is opened. This thereby gives maximumstrength of securement for the entire lock frame 30 and its lock bolt 32 mounted thereon as will be hereinafter described while still performing the function of securing the strike plate 38 in proper position relative to the main door lock 24 and its lock bolt 28.

At the juncture between the lock frame edge part 34 and side part 36 thereof, the lock frame 30 is formed with a bolt opening 46 generally longitudinally therethrough and the lock frame side part 36 projects longitudinally therefrom outwardly adjacent the doorjamb side surface 14 as previously described. The lock frame side part 36 is formed with longitudinally spaced bolt overlying portions 48 separated by intermediate bolt underlying portions 50. The lock bolt 32 is longitudinally slidably received longitudinally aligned with the lock frame bolt opening 46 inwardly of the spaced bolt overlying portions 48 and outwardly of the intermediate bolt underlying portions 50.

In this manner, the lock bolt 32 is slidably secured on the lock frame 30 with a projecting end portion 52 thereof longitudinally projectable through and retractable within the lock frame bolt opening 46, while an opposite bolt operating end portion 54 remains at all times longitudinally beyond the free longitudinal end of the frame side part 36 as can be seen in FIGS. 1, 2 and 3. The bolt overlying portions 48 of the frame side part 36 therebeneath or inwardly toward frame side par 36 thereby project vertically along and securely retain the lock bolt 32 inwardly therebeneath or inwardly toward the doorjamb side surface 14 despite the longitudinal slidable position of the lock bolt, and the bolt underlying portions 50 of the frame side part through vertical extension inwardly beneath or inwardly between the lock bolt and the doorjamb side surface cooperate to retain the lock bolt longitudinally aligned and slidable through the lock frame bolt opening 46. Thus, any forces against the lock bolt 32 inwardly away from the doorjamb side surface 14 are directly resisted by the lock frame side part 36 and transmitted therethrough into the lock frame edge part 34 ultimately through the fasteners 44 into the doorjamb edge surface 12 at right angles to the direction of initial swinging movement of the door 16 in its inward swinging movement from the doorjamb 10.

As best seen in FIGS. 1 and 2, the projecting end portion 52 of the lock bolt 32 terminates longitudinally in an inward curl or inward extension 56 toward the door side surface 20 and then in a short reverse longitudinal extension 58 substantially parallel to said door side surface when the lock bolt is in its extended position overlapping the door. With such configuration, the reverse longitudinal extension 58 of the bolt projecting end portion 52 will not only longitudinally overlap the door side surface 20 when the lock bolt 32 is extended, but will move during such extension closely adjacent if not abutting the door side surface 20 providing maximum locking security. The bolt operating end portion 54 of the lock bolt 32 terminates longitudinally beyond the lock frame side part 36 in a finger grip extension outwardly away from the doorjamb side surface 14 and away from the exposed face of the lock frame side part 36 so as to serve as a finger grip portion for slidably moving the lock bolt 32 within the lock frame 30 and also to serve as a longitudinal limit for the longitudinal slidable movement of the lock bolt relative to the lock frame.

In use of the swinging door lock construction of the present invention, therefore, the lock bolt 32 may be positioned in its retracted position as shown in FIGS. 2 and 3 with the bolt projecting end portion 52 withdrawn into the lock frame bolt opening 46 so as to permit free inward swinging movement of the door 16 from the doorjamb 10 by proper manipulation of the main door lock 24 and the disengagement of the main lock bolt 28 from the strike plate 38. When it is desired to use the deadbolt type of lock of the present invention, the door 16 is moved to closed position and the lock bolt 32 may be slid longitudinally relative to the lock frame 30 unit the projecting end portion 52 of the bolt overlaps the door side surface 20 as shown in FIG. 1, thereby securely retaining the door against inward swinging movement relative to the doorjamb 10. Again, it is pointed out that in this projected or extended position of the lock bolt 32 overlapping the door side surface 20, the forces created by any attempted inward swinging movement of the door 16 will be transmitted from the lock bolt into the lock frame side part 36 and ultimately into the lock frame edge part 34 where such forces will be resisted by the fasteners 44 extending substantially at right angles to the initial inward swinging movement of the door and transmitted thereby into the doorjamb edge surface 12 so as to give the maximum resisting forces.

According to the principles of the present invention, therefore, a swinging door lock construction in the form of a deadbolt type lock is provided which may be mounted as an individual lock on the doorjamb of a swinging door construction and through the unique fastening of the lock frame edge part 34 to the doorjamb edge surface 12 will give maximum resistance to surreptitious inward swinging movement of the door, far greater than that of similar types of locks heretofore provided. Also, merely by the proper formation of the configuration of the lock frame 30 and particularly its edge part 34, the deadbolt type lock of the present invention may be directly combined with a usual main door lock 24 to provide the strike plate 38 for the main door lock and minimize the combined lock mounting procedure, the lock frame side part 36 of the deadbolt type lock serving the dual purpose of providing the increased strength of fastening of the lock frame 30 for the deadbolt type of lock and the mounting and structure for the main door lock strike plate 38 combined therewith. Still further, in the preferred form, the parts of the deadbolt type lock of the present invention, namely, the lock frame 30 and the lock bolt 32 each may be formed substantially unitary despite the assembled strength thereof so as to minimize both fabrication and assembly costs.

Iclaim:

1. In an auxiliary door lock construction for use in locking a swinging door in closed position with vertical edge surfaces of said door and a doorjamb facing and vertical side surfaces at a swinging side of said door and a side of said doorjamb generally longitudinally aligned; the combination of: a lock frame generally L shaped in horizontal cross section having an edge part secured to said vertical edge surface of said doorjamb facing said door edge surface and a side part extending generally longitudinally along said doorjamb side, said lock frame edge part including strike plate secured to said vertical edge surface of said doorjamb facing said door edge surface having means thereon engageable by a main door bolt extendable from said door edge surface; a lock bolt; and mounting means mounting said lock bolt on said lock frame side part movable between an extended position generally longitudinally overlapping and adjacent said door swinging side when said door is in said closed position blocking swinging movement of said door from said closed position and a retracted position longitudinally displaced from said door swinging side permitting said door swinging movement.

2. An auxiliary door lock construction as defined in claim 1 in which said lock frame includes a bolt opening formed generally longitudinally therethrough at juncture of said lock frame edge and side parts; and in which said mounting means includes longitudinally spaced portions of said lock frame side part outwardly overlying said lock bolt inwardly exposing said lock bolt toward said doorjamb side and an intermediate portion of said lock frame side part inwardly underlying said lock bolt between said lock bolt and said doorjamb side, said spaced and intermediate portions of said lock frame side part longitudinally slidably mounting said lock bolt longitudinally aligned with a movable through said lock frame bolt opening between said extended and retracted positions.

3. In an auxiliary door lock construction for use in locking a swinging door in closed position with vertical side surfaces at a swinging side of said door and a side of said doorjamb generally longitudinally aligned; the combination of: a sheetlike lock frame having an edge part extending generally flatwise along and secured to said doorjamb edge surface, a side part on said lock frame connected to said edge part and extending generally flatwise longitudinally along said doorjamb side surface, said lock frame having a bolt opening formed generally longitudinally therethrough at point of juncture between said edge and side parts, said lock frame edge part including a strike plate extending generally flatwise along and secured to said doorjamb edge surface having engagement means thereon engageable by a main lock bolt longitudinally extendable from said edge surface of said door with said door in said closed position; and a sheetlike lock bolt longitudinally slidably mounted on said lock frame extending generally longitudinally and generally flatwise along said lock frame side part between portions of said lock frame side part and said doorjamb side surface, said lock bolt being longitudinally aligned with said lock frame bolt opening projecting through said opening overlapping said door adjacent said door side surface in an extended position blocking swinging movement of said door, said lock bolt being withdrawn through said lock frame bolt opening free of substantial projection from said lock frame in a retracted position permitting said door swinging movement.

4. An auxiliary door lock construction as defined in claim 3 in which said lock frame is a substantially unitary lock frame; in which said lock frame side part includes longitudinally spaced portions outwardly overlying said lock bolt away from said doorjamb side surface and intermediate portions longitudinally between said spaced portions underlying said lock bolt toward said doorjamb side surface longitudinally mounting said lock bolt on said lock frame side part.

5. In a door lock construction for use in locking a swinging door in closed position with vertical edge surfaces of said door and a doorjamb facing and vertical side surfaces at a swinging side of said door and a side of said doorjamb generally longitudinally aligned; the combination of: a single thickness sheetlike unitary lock frame having an edge part extending generally flatwise along and secured to said doorjamb edge surface, a side par on said lock frame connected to said edge part and extending generally flatwise longitudinally along said doorjamb side surface, said lock frame having a bolt opening formed generally longitudinally therethrough at point ofjuncture between said edge and side parts, a lock bolt longitudinally slidably mounted on said lock frame extending generally longitudinally and generally flatwise along said lock frame side part between portions of said lock frame side part and said doorjamb side surface; said lock frame side part having longitudinally spaced portions outwardly transversely overlying said lock bolt away from said doorjamb side surface in all positions of said lock bolt and intermediate portions longitudinally between said spaced portions extending first toward said doorjamb side surface and then transversely underlying said lock bolt with ends spaced transversely apart; and said lock bolt being longitudinally slidable along and guided by said transversely overlying longitudinally spaced and said transversely underlying intermediate portions of said lock frame side part longitudinally aligned with said lock frame bolt opening projecting through said opening overlapping said door adjacent said door side surface in an extended position blocking swinging movement of said door, said lock bolt being slidably withdrawn through said lock frame bolt opening free of substantial projection from said lock frame in a retracted position permitting said door swinging movement.

6. A door lock construction as defined in claim 5, in which said lock bolt is single thickness sheetlike and unitary and includes a projecting end longitudinally overlapping said door adjacent said door side surface in said extended position of said lock bolt and a longitudinally opposite end projecting at all times longitudinally away from said door beyond said longitudinally spaced portions of said lock frame side part, said lock bolt projecting end terminating longitudinally in a U shape having an inward extension toward said door side surface and a reversely longitudinal extension adjacent said door side surface in said lock bolt extended position with said door in said closed position, said lock bolt opposite end terminating longitudinally in an outward extension away from said doorjamb side surface and away from said lock frame side part.

7. A door lock construction as defined in claim 5 in which said lock frame is rigid and generally L shaped in longitudinal cross section having an included angle between said edge and side parts an obtuse angle with said side part being positioned extending at an acute angle to said door side surface; and in which said lock bolt is longitudinally slidable along and guided by said lock frame side part movable longitudinally generally parallel to said lock framev side part at said acute angle to said door side surface with said lock bolt through said acute angle movement moving progressively closer to said door side surface in movement to said extended position.

8. A door lock construction as defined in claim in which said lock frame is rigid and generally L shaped in longitudinal cross section having an included angle between said edge and side parts an obtuse angle with said side part being positioned extending at an acute angle to said door side surface; in which said lock bolt is longitudinally slidable along and guided by said lock frame side part movable longitudinally generally parallel to said lock frame side part at said acute angle to said door side surface with said lock bolt through said acute angle movement moving progressively closer to said door side surface in movement to said extended position; and in which said lock bolt is single thickness sheetlike and includes a projecting end longitudinally overlapping said door adjacent said door side surface in said extended position of said lock bolt and a longitudinally opposite end projecting at all times longitudinally away from said door beyond said longitudinally spaced portions of said lock frame side part, said lock bolt projecting end terminating longitudinally in a U shape having an inward extension toward said door side surface and a reversely longitudinal extension adjacent said door side surface in said lock bolt extended position with said door in said closed position, said lock bolt opposite end terminating longitudinally in an outward extension away from said doorjamb side surface and away from said lock frame side part.

i l k i 

1. In an auxiliary door lock construction for use in locking a swinging door in closed position with vertical edge surfaces of said door and a doorjamb facing and vertical side surfaces at a swinging side of said door and a side of said doorjamb generally longitudinally aligned; the combination of: a lock frame generally L shaped in horizontal cross section having an edge part secured to said vertical edge surface of said doorjamb facing said door edge surface and a side part extending generally longitudinally Along said doorjamb side, said lock frame edge part including strike plate secured to said vertical edge surface of said doorjamb facing said door edge surface having means thereon engageable by a main door bolt extendable from said door edge surface; a lock bolt; and mounting means mounting said lock bolt on said lock frame side part movable between an extended position generally longitudinally overlapping and adjacent said door swinging side when said door is in said closed position blocking swinging movement of said door from said closed position and a retracted position longitudinally displaced from said door swinging side permitting said door swinging movement.
 2. An auxiliary door lock construction as defined in claim 1 in which said lock frame includes a bolt opening formed generally longitudinally therethrough at juncture of said lock frame edge and side parts; and in which said mounting means includes longitudinally spaced portions of said lock frame side part outwardly overlying said lock bolt inwardly exposing said lock bolt toward said doorjamb side and an intermediate portion of said lock frame side part inwardly underlying said lock bolt between said lock bolt and said doorjamb side, said spaced and intermediate portions of said lock frame side part longitudinally slidably mounting said lock bolt longitudinally aligned with a movable through said lock frame bolt opening between said extended and retracted positions.
 3. In an auxiliary door lock construction for use in locking a swinging door in closed position with vertical side surfaces at a swinging side of said door and a side of said doorjamb generally longitudinally aligned; the combination of: a sheetlike lock frame having an edge part extending generally flatwise along and secured to said doorjamb edge surface, a side part on said lock frame connected to said edge part and extending generally flatwise longitudinally along said doorjamb side surface, said lock frame having a bolt opening formed generally longitudinally therethrough at point of juncture between said edge and side parts, said lock frame edge part including a strike plate extending generally flatwise along and secured to said doorjamb edge surface having engagement means thereon engageable by a main lock bolt longitudinally extendable from said edge surface of said door with said door in said closed position; and a sheetlike lock bolt longitudinally slidably mounted on said lock frame extending generally longitudinally and generally flatwise along said lock frame side part between portions of said lock frame side part and said doorjamb side surface, said lock bolt being longitudinally aligned with said lock frame bolt opening projecting through said opening overlapping said door adjacent said door side surface in an extended position blocking swinging movement of said door, said lock bolt being withdrawn through said lock frame bolt opening free of substantial projection from said lock frame in a retracted position permitting said door swinging movement.
 4. An auxiliary door lock construction as defined in claim 3 in which said lock frame is a substantially unitary lock frame; in which said lock frame side part includes longitudinally spaced portions outwardly overlying said lock bolt away from said doorjamb side surface and intermediate portions longitudinally between said spaced portions underlying said lock bolt toward said doorjamb side surface longitudinally mounting said lock bolt on said lock frame side part.
 5. In a door lock construction for use in locking a swinging door in closed position with vertical edge surfaces of said door and a doorjamb facing and vertical side surfaces at a swinging side of said door and a side of said doorjamb generally longitudinally aligned; the combination of: a single thickness sheetlike unitary lock frame having an edge part extending generally flatwise along and secured to said doorjamb edge surface, a side par on said lock frame connected to said edge part and extending generalLy flatwise longitudinally along said doorjamb side surface, said lock frame having a bolt opening formed generally longitudinally therethrough at point of juncture between said edge and side parts, a lock bolt longitudinally slidably mounted on said lock frame extending generally longitudinally and generally flatwise along said lock frame side part between portions of said lock frame side part and said doorjamb side surface; said lock frame side part having longitudinally spaced portions outwardly transversely overlying said lock bolt away from said doorjamb side surface in all positions of said lock bolt and intermediate portions longitudinally between said spaced portions extending first toward said doorjamb side surface and then transversely underlying said lock bolt with ends spaced transversely apart; and said lock bolt being longitudinally slidable along and guided by said transversely overlying longitudinally spaced and said transversely underlying intermediate portions of said lock frame side part longitudinally aligned with said lock frame bolt opening projecting through said opening overlapping said door adjacent said door side surface in an extended position blocking swinging movement of said door, said lock bolt being slidably withdrawn through said lock frame bolt opening free of substantial projection from said lock frame in a retracted position permitting said door swinging movement.
 6. A door lock construction as defined in claim 5, in which said lock bolt is single thickness sheetlike and unitary and includes a projecting end longitudinally overlapping said door adjacent said door side surface in said extended position of said lock bolt and a longitudinally opposite end projecting at all times longitudinally away from said door beyond said longitudinally spaced portions of said lock frame side part, said lock bolt projecting end terminating longitudinally in a U shape having an inward extension toward said door side surface and a reversely longitudinal extension adjacent said door side surface in said lock bolt extended position with said door in said closed position, said lock bolt opposite end terminating longitudinally in an outward extension away from said doorjamb side surface and away from said lock frame side part.
 7. A door lock construction as defined in claim 5 in which said lock frame is rigid and generally L shaped in longitudinal cross section having an included angle between said edge and side parts an obtuse angle with said side part being positioned extending at an acute angle to said door side surface; and in which said lock bolt is longitudinally slidable along and guided by said lock frame side part movable longitudinally generally parallel to said lock frame side part at said acute angle to said door side surface with said lock bolt through said acute angle movement moving progressively closer to said door side surface in movement to said extended position.
 8. A door lock construction as defined in claim 5 in which said lock frame is rigid and generally L shaped in longitudinal cross section having an included angle between said edge and side parts an obtuse angle with said side part being positioned extending at an acute angle to said door side surface; in which said lock bolt is longitudinally slidable along and guided by said lock frame side part movable longitudinally generally parallel to said lock frame side part at said acute angle to said door side surface with said lock bolt through said acute angle movement moving progressively closer to said door side surface in movement to said extended position; and in which said lock bolt is single thickness sheetlike and includes a projecting end longitudinally overlapping said door adjacent said door side surface in said extended position of said lock bolt and a longitudinally opposite end projecting at all times longitudinally away from said door beyond said longitudinally spaced portions of said lock frame side part, said lock bolt projecting end terminating longitudinallY in a U shape having an inward extension toward said door side surface and a reversely longitudinal extension adjacent said door side surface in said lock bolt extended position with said door in said closed position, said lock bolt opposite end terminating longitudinally in an outward extension away from said doorjamb side surface and away from said lock frame side part. 